2
Operating instructions
Safety-monitoring module
SRB 201ZH
EN
1.6 Warning about misuse
In case of inadequate or improper use or manipulations of
the safety-monitoring module, personal hazards or damage
to machinery or plant components cannot be excluded The
relevant requirements of the standards EN 1088 and
EN ISO 13850 must be observed
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual The manufacturer shall accept no liability for damages resul-
ting from the use of unauthorised spare parts or accessories
For safety reasons, invasive work on the device as well as arbitrary re-
pairs, conversions and modifications to the device are strictly forbidden;
the manufacturer shall accept no liability for damages resulting from
such invasive work, arbitrary repairs, conversions and/or modifications
to the device
The safety-monitoring module must only be used when the enclosure is
closed, ie with the front cover fitted
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
SRB 201ZH
Only if the information described in this operating instruc-
tions manual are realised correctly, the safety function and
therefore the compliance with the Machinery Directive is
maintained
2.2 Special versions
For special versions, which are not listed in the order code below 21,
these specifications apply accordingly, provided that they correspond to
the standard version
2.3 Destination and use
The safety-monitoring modules for integration in safety circuits are desi-
gned for fitting in control cabinets They are used for the safe evaluation
of the signals of two actuating elements A + B and correspond to a type
III/C two-hand control to DIN EN 574
The safety function is defined as the opening of the enabling circuits 13-
14 and 23-24 when one or both actuating elements A + B are released
The safety-relevant current paths with the output contacts 13-14 and
23-24 meet the following requirements under observation of a PFH
value assessment (also refer to chapter 25 "Safety classification"):
– Control category 4 – PL e to DIN EN ISO 13849-1
– corresponds to SIL 3 to DIN EN 61508-2
– SILCL 3 to DIN EN 62061
To determine the Performance Level (PL) of the entire safety function
(eg sensor, logic, actuator) to DIN EN ISO 13849-1, an analysis of all
relevant components is required
2.4 Technical data
General data
Standards:
IEC/EN 60204-1, EN 60947-5-1;
EN ISO 13849-1, IEC 61508
Climate resistance:
EN 60068-2-78
Mounting:
Snaps onto standard DIN rail to EN 60715
Terminal designations:
EN 60947-1
Material of the housings:
Plastic, glass-fibre reinforced
thermoplastic, ventilated
Material of the contacts:
AgSnO, self-cleaning, positive drive
Weight:
200 g
Start conditions:
Automatic
Feedback circuit (Y/N):
yes
Pull-in delay for automatic start:
typ 50 ms
Response time:
typ 30 ms, max 37 ms
Bridging in case of voltage drops:
typ 30 ms
Simultaneity monitoring:
≤ 0.5 s
Mechanical data
Connection type:
Screw connection
Cable section:
Min 0,25 mm² / max 2,5 mm²
Connecting cable:
rigid or flexible
Tightening torque for the terminals:
06 Nm
With removable terminals (Y/N):
yes
Mechanical life:
10 million operations
Electrical life:
Derating curve available on request
Resistance to shock:
30 g / 11 ms
Resistance to vibrations to EN 60068-2-6:
10 … 55 Hz,
amplitude 035 mm
Ambient conditions
Ambient temperature:
−25 °C … +60 °C
Storage and transport temperature:
−40 °C … +85 °C
Protection class:
Enclosure: IP40
Terminals: IP20
Clearance: IP54
Air clearances and creepage distances to IEC/EN 60664-1:
4 kV/2
(basic insulation)
EMC rating:
to EMC Directive
Electrical data
Contact resistance in new state:
max. 100 mΩ
Power consumption:
max 12 W
Rated operating voltage U
e
:
24 VDC –10%/+10%,
residual ripple max 10%
Fuse rating for the operating voltage:
Internal electronic trip:
F1, F2: tripping current > 02 A
F3: tripping current > 06 A
Monitored inputs
Cross-wire detection (Y/N):
Yes
Wire breakage detection (Y/N):
Yes
Earth leakage detection (Y/N):
Yes
Number of NO contacts:
2
Number of NC contacts:
2
Cable length:
1,500 m mit 15 mm²
2,500 m mit 25 mm²
Conduction resistance:
max. 40 Ω
Outputs
Number of safety contacts:
2 (13-14; 23-24)
Number of auxiliary contacts:
1 (31-32)
Number of signalling outputs:
0
Switching capacity of the safety contacts:
max 250 V, 6 A ohmic
(inductive in case of
appropriate protective wiring);
min 10 V / 10 mA
Switching capacity of the auxiliary contacts:
24 VDC / 2 A
Protection of the safety contacts
:
external (I
k
= 1000 A)
to EN 60947-5-1
Safety fuse 8 A quick blow, 63 A slow blow
Fuse rating for the auxiliary contacts:
25 A quick blow,
2 A slow blow
Utilisation category to EN 60947-5-1:
AC-15: 230 V / 6 A
DC-13: 24 V / 6 A
Dimensions H x W x D:
100 x 225 x 121 mm
The data specified in this manual are applicable when the component is
operated with rated operating voltage U
e
±0%
